What Gas To Use
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
The lowest oct that won't make it ping, anything else is wasted $. Don't fill up on E the first time, get 1/2 or so that way if it does ping you can put some higher test in to combat it.
Melting Slicks
Joined: Oct 2000
Posts: 3,023
Likes: 2
From: TEXASTEXASTEXASTEXAS TEXASTEXASTEXASTEXAS
St. Jude Contributor
Originally Posted by Fevre
The lowest oct that won't make it ping, anything else is wasted $. Don't fill up on E the first time, get 1/2 or so that way if it does ping you can put some higher test in to combat it.
That's the smart way to do it. With that motor, I'm guessing you'll find regular unleaded will do you just fine in all except maybe the hottest months of the summer.JB
Drifting
Joined: Sep 2004
Posts: 1,532
Likes: 4
From: Fairview Heights Illinois, near Saint Louis MO, STL C3 Shark
unless your running more than 10 or so compression, the good ol 85 or 87 octane - whatever the lowest is will be just fine. If you ping any and have lower compression, that means your timing is too advanced. The 190hp engine would be 8 or so compression. 
